Viktor Szépe

<h4>Only for development!</h4>
<h4>Now with OPcache memory consumption support</h4>
<p>This plugin dumps the colorized filenames and memory consumptions or file sizes after the normal WordPress HTML output, after the closing html tag. This generates invalid HTML but gives you an overview of loaded plugins and the current theme.</p>
<p><em>What’s running</em> lists all files parsed and executed by the PHP engine. It can be used for plugin or theme refactoring.</p>
<h4>Now you can highlight your own plugin and theme</h4>
<p>Provide a part of its path in wp-config.php:</p>
<pre><code>define( 'WHATS_RUNNING_HIGHLIGHT', 'wp-content/plugins/my-plugin' ); </code></pre>
<h4>Color codes</h4>
<ul>
<li>your code is highlighted with YELLOW background</li>
<li>plugin files are in BLUE</li>
<li>themes files are in ORANGE</li>
<li>files in the wp-includes directory are in GREEN</li>
<li>files in the wp-admin directory are in GREY</li>
<li>all other files are in RED</li>
<li>VIOLET bar after the filename represents the file size ( 0.5 kB/px )</li>
<li>DARK MAGENTA bar after the filename represents the OPcache memory consumption ( 1 kB/px )</li>
</ul>
<h4>Links</h4>
<p>You can watch <a href="https://core.trac.wordpress.org/ticket/28364" rel="nofollow ugc">WP core bug #28364</a> to get more information about <a href="https://github.com/szepeviktor/WPHW/blob/master/wp-entry-points.md" rel="nofollow ugc">WordPress entry points</a>.</p>
<p>You can find some documentaion here what makes a WordPress plugin efficient: https://github.com/szepeviktor/WPHW</p>
<p>Development of this plugin goes on on <a href="https://github.com/szepeviktor/whats-running" rel="nofollow ugc">GitHub</a>.</p>


What's running

Lists WordPress require() calls mainly for plugin code refactoring.

SmilingSyntax

Manjul

<p>HookTrace is a developer observability tool that records and visualizes the runtime execution order of WordPress hooks, filters, and plugin initialization for a single page request.</p>
<p><strong>For Developers Only</strong></p>
<p>This plugin is designed exclusively for development and staging environments. It helps developers understand:</p>
<ul>
<li>Which hooks fired, in what order</li>
<li>Which callbacks executed on each hook</li>
<li>Callback priority and execution time</li>
<li>Source plugin, theme, or core location</li>
<li>Exact file and line number</li>
<li>Plugin and theme load timeline</li>
</ul>
<p><strong>Key Features:</strong></p>
<ul>
<li><strong>Hook List Tracking</strong> – Records all hooks that fire during a page request with type and source information</li>
<li><strong>Detailed Callback Inspection</strong> – When a hook is selected, displays comprehensive callback information including priority, execution order, duration, file path, and source</li>
<li><strong>Modern Modal UI</strong> – Beautiful, searchable interface with filtering capabilities</li>
<li><strong>Zero Performance Impact</strong> – In-memory storage only, no database writes</li>
<li><strong>Early Boot Support</strong> – MU-plugin bootstrap captures hooks from the very beginning</li>
</ul>
<p><strong>Requirements:</strong></p>
<ul>
<li><code>WP_DEBUG</code> must be set to <code>true</code> in <code>wp-config.php</code></li>
<li>User must have <code>manage_options</code> capability (administrator)</li>
<li>PHP 8.0 or higher</li>
</ul>
<p><strong>Safety Features:</strong></p>
<ul>
<li>Automatically disables when <code>WP_DEBUG</code> is false</li>
<li>Never runs for non-admin users</li>
<li>Never modifies WordPress behavior</li>
<li>Observational only – no code execution changes</li>
</ul>


HookTrace – Trace Hooks with Precision


I think this is a brilliant piece of dev tool!



Although Query Monitor has something similar, this plugin has a singular focus and thus, have a wider possibility to be useful in this particular area of seeng and analyzing what's happening on each and every hook fired. Looking forward to explore using it more in my dev workflow.



Thank you for developing it.


Brilliant!

Cross-Plugin Debug & Trace Recorder - Records and visualizes hook execution order for WordPress developers.

What's running vs HookTrace – Trace Hooks with Precision